From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Summary of tests on the lubrication of the worm and nut of steering using different oils.
| Identifier | ExFiles\Box 67\4\ scan0381 | |
| Date | 17th August 1927 | |
| SUMMARY OF TESTS ON THE LUBRICATION OF WORM AND NUT OF STEERING USING DIFFERENT OILS. ---------------- The temperature in each case was approx. 59°C. Taking the efficiency of the steering with Prices Amber gear oil as 100% for purposes of comparison. Amber gear oil.A...... 100% Prices B............. 98% Castor............... 96% Prices C............. 96% Iso-Vis.............. 90% Sperm................ 75% Lard................. 50% Mobile E............. 25% ------------ hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||